You can watch the video tutorial, which provides a step-by-step guide through the process.
You can change the language of your documents such as invoices, drafts, credit notes, packing slips, return forms, and quotes also by following the simple steps below:
Step 1: Open Simple Invoice from your Shopify store’s “Apps” section.
Step 2: Click on “Templates” in the Simple Invoice dashboard.
Step 3: Click on the ‘Language’ section, then select the language you want your documents to be printed in. There are 30+ pre-defined languages.
Step 4: Please click the ‘Save’ button to confirm your changes.